ICX 7450-48 appl process cpu usage

[tadesxz]

Hi guys,

Hope you're well.

We've noticed a very strange behaviour in our ICX7450. We got a very high CPU usage but didn't ffind anything that justify it. This only occurs with CPU0. CPU1 is working fine as you can see below.

SSH@SPCRDC2ITA001#sh cpu-utilization 
cpu0:
7 percent busy, from 4 sec ago
1   sec avg: 99 percent busy
5   sec avg:  8 percent busy
60  sec avg:  9 percent busy
300 sec avg:  7 percent busy
cpu1:
0 percent busy, from 2 sec ago
1   sec avg: 0 percent busy
5   sec avg: 0 percent busy
60  sec avg: 0 percent busy
300 sec avg: 0 percent busy

==========================

SSH@SPCRDC2ITA001#sh cpu-utilization tasks 
top - 16:57:11 up 160 days, 13:54,  0 users,  load average: 4.18, 4.02, 3.97
 Threads: 163 total,   2 running, 161 sleeping,   0 stopped,   0 zombie
 %Cpu0  :  87.0/12.3   99[||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||| ]
 %Cpu1  :   0.0/0.0     0[                                                                                                    ]
 GiB Mem : 22.8/1.951    [                                                                                                    ]
 GiB Swap:  0.0/0.000    [                                                                                                    ]

The proccess that seems to be offendig this device is

  1590 root      21   1  670.6m 369.9m 85.0 18.5 164688:55 R          `- appl

So, there is a way to restart just this process or something like that? Do you know what is the cause of this usage for this task?

We are trying to avoid a device restart in this case.

Thanks in advance.

Regards,
Marcelo

[BenBeck · Accepted solution]

Hey Marcelo, 

I would advise opening a support case so we can troubleshoot what is hitting the CPU. I would not worry about appl in show cpu task. The generic fastiron process correlates with appl and generally shows as almost all of the usage there. 

[tadesxz]

Hi Ben,

We will open a ticket and follow as you mentioned.

Thanks for your time!

[jijo_panangat]

Hi Marcelo,

Our architecture uses Broadcom SoCs and all execution run in cpu0 hence the cpu1 is zero, This is expected.Pls open a tac case for debugging the high cpu.


Thanks
Jijo 

[lachancp]

Was there a fix/resolution for this?